Finding the Fourth Proportional to 394,239.30, 553,334.70 and 394,239.30
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Solution
The fourth proportional to 394,239.30, 553,334.70 and 394,239.30 is: 553,334.70
Step by Step Solution
- Step 1: Write the proportion equation
394,239.30 : 553,334.70 = 394,239.30 : x - Step 2: Convert to fraction form
394,239.30/553,334.70 = 394,239.30/x - Step 3: Cross multiply
394,239.30x = 553,334.70 × 394,239.30 - Step 4: Simplify right side
394,239.30x = 218,146,284,793.71 - Step 5: Solve for x
x = 218,146,284,793.71/394,239.30 - Step 6: Final answer
x = 553,334.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.